BetaFPV ELRS Nano TX Module

BETAFPV Nano RF TX module is based on the ExpressLRS project, an open-source RC link for RC applications. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. This makes ExpressLRS one of the fastest RC links available while still offering long-range performance.
A ton of ExpressLRS items are available now!

Specification

Packet refresh rate:  25Hz/50Hz/100Hz/200Hz (915MHz/868MHz)                                 25Hz/50Hz/150Hz/250Hz/500Hz (2.4GHz)

RF output power: 100mW/250mW/500mW
RF output power: 0.3mW/Mhz 20mW MAX (Japan MIC version)
Frequency bands (Nano RF Module 2.4G version): 2.4GHz ISM
Frequency bands (Nano RF Module 915MHz/868MHz version): 915MHz FCC/868MHz EU
Input voltage: 5V~12V
USB port: Type-C

Diagram
BETAFPV Nano RF module is compatible with the radio transmitter which has the nano module bay (AKA lite module bay, e.g. Frsky Taranis X-Lite, Frsky Taranis X9D Lite, TBS Tango 2). 

Note: Please assemble the antenna before power on. Otherwise, the PA chip in the Nano TX module will be damaged permanently. 
Upgrade the Firmware
The stock firmware of the Nano receiver and TX module manufactured by our company is ELRS 3.3.0.;  ELRS Innovative team officially released the first major version V1.0.0 on 17th July. It has some updates :

2.4G Nano TX Module supports 500Hz refresh rate;
Short press the button on the Nano module 3 times to get into the binding status.

High recommend upgrading the TX modules and receivers’ to the first major version V3.3.0. Also, pilots could check this Github page for the newest released version if possible. 
Note:
1. TX module and receiver have to be in the same ELRS version, otherwise, the binding will fail.
2. TX module does NOT support upgrade via WiFi. Please use the ExpressLRS Configurator to upgrade the firmware.
Now Nano TX module from Jan 2022 supports upgrade via WIFI. For order